1. Wireless signal transmission: 433.92 MHz RF transmission frequency is used between the indoor receiving host and the outdoor sensor. In open areas, the transmission range is up to 100 meters, without walls or floors. 2. Snooze Alarm: When the alarm rings, you just need to touch the corresponding area on the top of the phone to activate the snooze alarm. The bell interval of the snooze alarm clock can be set from 5 to 60 minutes. If it is set to 'Off', it means that this function is turned off. 3. Humanised alarm clock function: supports weekday mode and weekend mode, up to 2 alarm clocks can be set at the same time, and each supports snooze alarm function. 4. Wind speed and wind direction: In real time mode, you can display the average wind speed in the last 30 seconds, the highest wind speed and wind direction in the last 1 hour. Under the assumption of the measurement data, switch to the historical data mode of wind speed. You can display the historical data according to the time dimension of adjusting a menu and a specific date in the last 1 hour, within 24 hours, within 7 days, within the last year or several years.